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## Main Question or Discussion Point

Please help me to confirm, weather the following step is correct

[tex] |\gamma| \leq \cos (\beta) [/tex]

[tex] \arccos (|\gamma|) \leq \beta [/tex]

does taking the arccos() on both sides of equation changes the relational operator??

[tex] |\gamma| \leq \cos (\beta) [/tex]

[tex] \arccos (|\gamma|) \leq \beta [/tex]

does taking the arccos() on both sides of equation changes the relational operator??